<?xml version="1.0" encoding="utf-8"?>

<selector xmlns:android="http://schemas.android.com/apk/res/android">
	<!-- 没有焦点时的背景图片 -->
	<item android:state_window_focused="false"
	android:drawable="@drawable/bg1" />
	<!-- 非触摸模式下获得焦点并单击时的背景图片 -->
	<item android:state_focused="true" android:state_pressed="true"
	android:drawable= "@drawable/bg2" />
	<!-- 触摸模式下单击时的背景图片 -->
	<item android:state_focused="false" android:state_pressed="true"
	android:drawable="@drawable/bg2" />
	<!--选中时的图片背景 -->
	<item android:state_selected="true"
	android:drawable="@drawable/bg3" />
	<!--获得焦点时的图片背景 -->
	<item android:state_focused="true"
	android:drawable="@drawable/bg4" />
</selector>
